Arianespace successfully launched CSO-2 after a one-day delay.

Liftoff occurred at 11:42 a.m. EST (1642 GMT) after a one-day delay due to bad weather. Optical Space Component 2 (or Composante Spatiale Optique 2, CSO-2, in French) is the second in a constellation of three identical military observation satellites that will operate in different polar orbits to accomplish two missions: reconnaissance for CSO-1 and CSO-3, and identification for CSO-2.